Am nevoie de ajutor va rog
Dau coroana
(este algebra de clasa a VI)

15. 2+25%2= 2+0.5=2.5
16. 2+x%2=3
2+2x/100=3 =>2x/100=1 =>x= 50 (50%)
17. 45%52300=23535 => femei =52300-23535=28765
18. 800+20%800= 800+160=960
19. 9+30%9=9+2.7=11.7lei